Are 1.6 Gti And 1.9 Gti Brake Servo's Common?

[Ian205 3 1 Cars]

as above, have got a 1.9 axle for my 1.6. on the 1.6 shell the brake servo has 3 ports. the 1.9 servo has 4 ports,

where the brake lines are attatched underneath the car on both cars is the same set up. will the 3 port servo operate the rear calipers properly or is the reason for the 4th pipe for more pressure

thanks

[ORB 227 1 Cars]

You mean master cylinder.

 

On a 1.9 there should be a line for each brake caliper from the master cylinder, thus on a 1.9 there was originally a 4 port cylinder.

 

However lots of people run a 1.9 beam on a 1.6 cylinder

[welshpug 1,655]

the servo has a single vacuum port.

 

I guess you are talking about the Master cylinder, in which case the specific original part isnt common, however a standard replacement that does the job is very easy to find, its the same as many VW golfs, a Bendix item comes with a blanking plug which you use to make it a 3 port item if required (or if there's a 2 port variant for whatever vehicle you buy it for you'll receive 2 blanking plugs)

 

pressures will not change at all if you stick to the same piston size.

Edited April 2, 2013 by welshpug

[j_turnell 136 3 Cars]

You can use the existing 1.6 3 port master cylinder with no problems at all, All you will need to do is run copper from the rear flexy's to the calipers. This setup is in fact better IMO as you don't have to worry about the 1.9 rear compensators failing as this is a common problem, plus there is less pipe to worry about with the single line.

[Ian205 3 1 Cars]

yes master cylinder, my mistake. thats good new as the master cylinder looks a real pain to remove!

[welshpug 1,655]

Why does it look a pain? 2 nuts and three unions, very simple!

[Ian205 3 1 Cars]

do they not have to be opened from the inside?

[allye 530 3 Cars]

do they not have to be opened from the inside?

 

The servo does, the master cylinder does not.

[mikeyd 13]

if you dont know the difference between a servo and a m /cylinder it may be time to get someone else to fix your brakes !

[Ian205 3 1 Cars]

thanks for that pointless reply mikeyd. and for your info i have done timing belts and head gaskets so i think i;m quite capable of fixing my breaks. i simply got the name mixed up, does'nt mean i dont know what i'm doing

[ORB 227 1 Cars]

To be fair, it's good sound advice. Brakes are NOT to be fooked with unless you are confident.

 

By saying "the master cylinder looks a real pain to remove" does not inspire illusions of confidence.

 

I'm not digging, you may be awesome at brakes, but it's always sound advice to not touch em!

[Ian205 3 1 Cars]

i know what your saying but i know the do's and dont of brakes and bleeding breaks, what i meant by the master clyinder looks a pain to remove, i meant the servo, as i would have been removing the two together as one, and not seperating them if i could help it.

[glenwah 20]

Why not seperate them? It's far easier to just take the master cylinder off on its own if that's all your planning on changing, just take the lines off then its only two bolts.

[Ian205 3 1 Cars]

dont need to change it at all now as informed above, but i know what your saying i was just stating what i meant in a previous post. my new concern is i have 2 axle's at home needing to be refurbed, and the car jacked up in the middle of the way